What the sigma? Some know “sigma” as the 18th letter of the Greek alphabet but it’s also teen slang for a cool dude.

Here are the backstories behind the emblems and logos of the world's most popular automakers, from Acura to Volvo and every brand in between.

Top Stock Losers Explore the biggest stock losers today along with up-to-date performance data, including the latest price, share price changes, trading volume, and more. We cover the top stock ...